Motorola Radius Cm200 Cm300 Pm400 Basic 6802966c15 A Manual

							Radio Disassembly - Detailed2-7
6.3 Main Shield Removal
1. Insert the screw driver in the gap between the main shield and chassis (speaker cutout area) 
and push the shield up. See Figure 2-6.
2. Lift the cover from the chassis.
Figure 2-6 Main Shield Removal
6.4 PA Shield and DC Cable Removal
1. Remove the three screws that attach the PA shield to PCB, and remove the PA shield.
2. Remove the accessory Connector cap.
3. Remove the two screws that attach the DC power cable to the PCB and pull it out from the 
side.
Figure 2-7 PA Shield and DC Cable Removal (for Low Power Models)
PA Shield
Fixing Screws (3)
Accessory 
Connector
CapDC
Cable
DC Cable
Fixing Screws
(2) 
						

							2-8MAINTENANCE
Figure 2-8 PA Shield and DC Cable Removal (for High Power Models)
6.5 PA Clip and Main PCB Removal (for Low Power Models)
1. Remove the screw that attaches the PA clip to the chassis. See Figure 2-9.
2. Remove the PA clip.
3. Remove all the screws that fix the PCB to the chassis.
4. Loosen the M2 screw (about 3 to 4 turns) on the RF connector using hex tool 
(Part number: 6680334F39).
5. Loosening this screw, enables you to unscrew the RF connector from outside.
6. Carefully remove the main PCB in a diagonal manner.
Figure 2-9 PA Clip and Main PCB Removal (for Low Power Models)
NOTEIt is recommended to grip the volume potentiometer and remove the PCB board
M2 ScrewPA Clip
Main PCB 
						

							Radio Disassembly - Detailed2-9
6.6 Main PCB Removal (for High Power Models)
1. Remove the PA screws. See Figure 2-10.
2. Remove all the screws that fix the PCB to the chassis.
3. Loosen the M2 screw (about 3 to 4 turns) on the RF connector using hex tool
(Part number: 6680334F39).
4. Loosening this screw, enables you to unscrew the RF connector from outside.
5. Carefully remove the main PCB in a diagonal manner.
Figure 2-10 PA Clip and Main PCB Removal (for High Power Models)
NOTEIt is recommended to grip the volume potentiometer and remove the PCB board 
						

							2-10MAINTENANCE
6.7 Disassembly of Control Head - CM200
1. Disconnect the flat cable from the Control Head PCB connector. See Figure 2-11.
2. Remove the PCB from the keypad assembly.
3. Remove the LENs from the rubber keypad assembly.
4. Remove the keypad assembly from the control head housing by lifting it up from the face 
side.
5. Disconnect the speaker socket and remove the speaker from the keypad assembly.
.
Figure 2-11 Control Head Housing Removal CM200
NOTEDO NOT touch or contaminate the conductive pads on the under side of the keypad 
or the conductive contacts on the printed circuit board.
Control Head Housing
Keypad Assembly
Lens
PCB
Speaker 
						

							Radio Disassembly - Detailed2-11
6.8 Disassembly of Control Heads - CM300/PM400
1. Disconnect the flat cable from the Control Head PCB connector. See Figure 2-12.
2. Remove the PCB from the keypad assembly.
3. Remove the LCD assembly from the rubber keypad assembly.
4. Remove the keypad assembly from the control head housing by lifting it up from the face side.
5. Disconnect the speaker socket and remove the speaker from the keypad assembly.
Figure 2-12 Control Head Housing Removal CM300/PM400
NOTEDO NOT touch or contaminate the conductive pads on the under side of the keypad, 
the conductive contacts on the printed circuit board or the elastomeric connector.
Control Head Housing
SpeakerKeypad Assembly
LCD AssemblyPCB 
						

							2-12MAINTENANCE
7.0 Radio Assembly
7.1 Chassis Assembly (for Low Power Models)
1. Ensure that the Fuji Poly Thermal Pad is on the small pedestal located on the PA 
compartment of the chassis.
2. Verify that the potentiometer is soldered properly.
3. Take the main PCB and smear thermal paste on LDMOS Power Amplifier, TO220, and Audio 
Power Amplifier. 
4. Slide the main board diagonally into the chassis. 
5. Tighten all eight screws (Torx T10).
6. Assemble the O-ring on the RF connector and tighten it using Torque 22 lb.in.
7. Tighten the RF connector security screw M2 using Torque 1.5 lb. (through the opening in the 
PCB).
8. Take the Power Amplifier Clip and insert the leg-shape side into the opening groove located 
on the PCB. Tighten the screw using Torque 13 lb.in
9. Take the PA Shield and place it on the PA compartment. Tighten the three screws using 
Torque 13 lb.in. Tighten the middle screw first, then the screw located on the left side, and 
lastly the screw located on the right side.
10. Insert the DC cable into the slot. Ensure that it is seated correctly on the chassis hook located 
below the DC cable. Attach it to the chassis and PCB by tightening the two screws using 
Torque 13 lb.in (Torx T10).
11. Take the main shield and place it on the chassis. Check that the corners of the main shield 
are seated properly on the corner supports.
12. Take the main seal and place it inside the top cover. Verify that the main seal is seated prop-
erly on its placement ribs and all around the groove.
13. Take the upper cover, place it properly on the chassis, and push it down. Three click sounds 
are heard from both sides and back.
7.2 Chassis Assembly (for High Power Models)
1. Verify that the potentiometer is soldered properly.
2. Take the main PCB and smear thermal paste on T0220 and Audio Power Amplifier.
3. Slide the main board diagonally into the chassis.
4. Tighten all eight screws (Torx T10).
5. Assemble the O-ring on the RF connector and tighten it using Torque 22 lb.in.
6. Tighten the RF connector security screw M2 using Torque 1.5 lb. (through the opening in the 
PCB).
7. Take two PA Screws and place in screw holes over PA. Tighten the screws using Torque 13 
lb.in.
8. Take the PA Shield and place it on the PA compartment. Tighten the three screws using 
Torque 13 lb.in. Tighten the middle screw first, then the screw located on the left side, and 
lastly the screw located on the right side.
9. Insert the DC cable into the slot. Ensure that it is seated correctly on the chassis hook located 
below the DC cable. Attach it to the chassis and PCB by tightening the two screws using 
Torque 13 lb.in. (Torx T10). 
						

							Radio Assembly2-13
10. Take the main shield and place it on the chassis. Check that the corners of the main shield are 
seated properly on the corner supports.
11. Take the main seal and place it inside the top cover. Verify that the main seal is seated prop-
erly on its placement ribs and all around the groove.
12. Take the upper cover, place it properly on the chassis, and push it down. Three click sounds 
are heard from both sides and back.
7.3 Control Heads Assembly
1. Assemble the Control Heads by reversing the procedure for dis-assembly..
7.4 Control Head Fitting
1. Hold the Control Head in one hand and the chassis assembly in the other hand.
2. Insert the flat cable into the main PCB connector through the slot in the chassis.
3. Place the Control Head Assembly on the chassis assembly in a diagonal manner. Two clicking 
sounds are heard.
4. Insert the Volume Knob into its groove and push it in.
5. Place the cap of the accessory connector over the accessory pin.NOTE
Care should be taken not to touch or contaminate the conductive strip connectors and key-
pad conductors on the underside of the display and the elastomeric connectors (GM3689
only). 
						

							2-14MAINTENANCE
7.5 Option Board Installation
1. Follow the disassembly procedure in paragraphs 6.1 to 6.3.
2. Remove and discard the 4xM3 screws holding the main pcb and replace with the 4 spacers 
provided. Torque the spacers to 10 lbs.
3. Insert the jumper flex into the connector on the option board. Notice the orientation of the 
right-angle flex circuit.
4. Insert the other end of the jumper flex into the connector on the main pcb. 
5. Fold the flex circuit under the option board. 
6. Position the option board over the spacers and retain using the 4xM2 screws provided.
Figure 2-13 Option Board Installation
7. With the option board correctly in place, the main shield and top cover can be assembled as 
detailed in paragraph 7.1 steps 11 to 13.
Spacers Flex Option Board M2 Screws
4xM3 screws
(replaced by spacers) 
						

							Radio Exploded Mechanical Views and Parts Lists 2-15
8.0 Radio Exploded Mechanical Views and Parts Lists
8.1 Radio Assembly - 1-25 W Models
Figure 2-14 Radio Assembly - 1-25 W Models
Table 2-1   Radio Assembly Parts List - 1-25 W Models
Item No. Description Part Number
1 Upper Cover1589224U01
2 Main Seal 3289329U01
3Bumper7587509V06
4 Main Shield 2689338U01
5 PA Shield2689337U01
6 Screw  0310943J12
7 PA Clip0789352U01
8 VHF Main PCB
UHF Main PCBSee Chapter 7 Model 
Charts and 
Specifications.
9 Connector Jack:
Mini UHF
BNC
5802810C15
5802810C16
10 O-Ring 5802810C15
11Power Cable Assembly0189484U01
12  Cap, Accessory Connector  3202607Y01
13 Chassis 25W 2789223U01
14 Felt 3586661Z01 
						

							2-16MAINTENANCE
8.2 Radio Assembly - 25-40 W/25-45 W Models
Figure 2-15 Radio Assembly - 25-40 W/25-45 W Models
Table 2-2   Radio Assembly Parts List - 25-40 W/25-45 W Models
Item No. Description Part Number
1 Upper Cover 1589224U01
2 Main Seal 3289329U01
3 Main Shield2689338U01
4 PA Shield 2689337U01
5 Screw0310943J12
6  VHF Main PCB (45W)
UHF Main PCB (40W)See Chapter 7 Model 
Charts and 
Specifications.
7 Connector Jack:
Mini UHF
BNC
5802810C15
5802810C16
8 O-Ring 5802810C15
9Power Cable Assembly0189484U01
10 Cap, Accessory Connector  3202607Y01
11  Chassis 40W 2789223U02
12 Felt 3586661Z01
13PA  S c r e w0386663Z01
14 Bumper 7587509V06